prepack/lib/intrinsics/ecma262/DataViewPrototype.js

Execute a JS bundle, serialize global state and side effects to a snapshot that can be quickly restored.

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});

exports.default = function (realm, obj) {
  // ECMA262 24.2.4.1
  obj.defineNativeGetter("buffer", context => {
    // 1. Let O be the this value.
    let O = context.throwIfNotConcrete();

    // 2. If Type(O) is not Object, throw a TypeError exception.
    if (!(O instanceof _index.ObjectValue)) {
      throw realm.createErrorThrowCompletion(realm.intrinsics.TypeError, "Type(O) is not Object");
    }

    // 3. If O does not have a [[DataView]] internal slot, throw a TypeError exception.
    if (!("$DataView" in O)) {
      throw realm.createErrorThrowCompletion(realm.intrinsics.TypeError, "O does not have a [[DataView]] internal slot");
    }

    // 4. Assert: O has a [[ViewedArrayBuffer]] internal slot.
    (0, _invariant2.default)(O.$ViewedArrayBuffer);

    // 5. Let buffer be O.[[ViewedArrayBuffer]].
    let buffer = O.$ViewedArrayBuffer;

    // 6. Return buffer.
    return buffer;
  });

  // ECMA262 24.2.4.2
  obj.defineNativeGetter("byteLength", context => {
    // 1. Let O be the this value.
    let O = context.throwIfNotConcrete();

    // 2. If Type(O) is not Object, throw a TypeError exception.
    if (!(O instanceof _index.ObjectValue)) {
      throw realm.createErrorThrowCompletion(realm.intrinsics.TypeError, "Type(O) is not Object");
    }

    // 3. If O does not have a [[DataView]] internal slot, throw a TypeError exception.
    if (!("$DataView" in O)) {
      throw realm.createErrorThrowCompletion(realm.intrinsics.TypeError, "O does not have a [[DataView]] internal slot");
    }

    // 4. Assert: O has a [[ViewedArrayBuffer]] internal slot.
    (0, _invariant2.default)(O.$ViewedArrayBuffer);

    // 5. Let buffer be O.[[ViewedArrayBuffer]].
    let buffer = O.$ViewedArrayBuffer;

    // 6. If IsDetachedBuffer(buffer) is true, throw a TypeError exception.
    if ((0, _is.IsDetachedBuffer)(realm, buffer) === true) {
      throw realm.createErrorThrowCompletion(realm.intrinsics.TypeError, "IsDetachedBuffer(buffer) is true");
    }

    // 7. Let size be O.[[ByteLength]].
    let size = O.$ByteLength;
    (0, _invariant2.default)(typeof size === "number");

    // 8. Return size.
    return new _index.NumberValue(realm, size);
  });

  // ECMA262 24.2.4.3
  obj.defineNativeGetter("byteOffset", context => {
    // 1. Let O be the this value.
    let O = context.throwIfNotConcrete();

    // 2. If Type(O) is not Object, throw a TypeError exception.
    if (!(O instanceof _index.ObjectValue)) {
      throw realm.createErrorThrowCompletion(realm.intrinsics.TypeError, "Type(O) is not Object");
    }

    // 3. If O does not have a [[DataView]] internal slot, throw a TypeError exception.
    if (!("$DataView" in O)) {
      throw realm.createErrorThrowCompletion(realm.intrinsics.TypeError, "O does not have a [[DataView]] internal slot");
    }

    // 4. Assert: O has a [[ViewedArrayBuffer]] internal slot.
    (0, _invariant2.default)(O.$ViewedArrayBuffer);

    // 5. Let buffer be O.[[ViewedArrayBuffer]].
    let buffer = O.$ViewedArrayBuffer;

    // 6. If IsDetachedBuffer(buffer) is true, throw a TypeError exception.
    if ((0, _is.IsDetachedBuffer)(realm, buffer) === true) {
      throw realm.createErrorThrowCompletion(realm.intrinsics.TypeError, "IsDetachedBuffer(buffer) is true");
    }

    // 7. Let offset be O.[[ByteOffset]].
    let offset = O.$ByteOffset;
    (0, _invariant2.default)(typeof offset === "number");

    // 8. Return offset.
    return new _index.NumberValue(realm, offset);
  });

  // ECMA262 24.2.4.5
  obj.defineNativeMethod("getFloat32", 1, (context, [byteOffset, littleEndian]) => {
    // 1. Let v be the this value.
    let v = context;

    // 2. If littleEndian is not present, let littleEndian be false.
    if (!littleEndian) littleEndian = realm.intrinsics.false;

    // 3. Return ? GetViewValue(v, byteOffset, littleEndian, "Float32").
    return (0, _arraybuffer.GetViewValue)(realm, v, byteOffset, littleEndian, "Float32");
  });

  // ECMA262 24.2.4.6
  obj.defineNativeMethod("getFloat64", 1, (context, [byteOffset, littleEndian]) => {
    // 1. Let v be the this value.
    let v = context;

    // 2. If littleEndian is not present, let littleEndian be false.
    if (!littleEndian) littleEndian = realm.intrinsics.false;

    // 3. Return ? GetViewValue(v, byteOffset, littleEndian, "Float64").
    return (0, _arraybuffer.GetViewValue)(realm, v, byteOffset, littleEndian, "Float64");
  });

  // ECMA262 24.2.4.7
  obj.defineNativeMethod("getInt8", 1, (context, [byteOffset]) => {
    // 1. Let v be the this value.
    let v = context;

    // 2. Return ? GetViewValue(v, byteOffset, true, "Int8").
    return (0, _arraybuffer.GetViewValue)(realm, v, byteOffset, realm.intrinsics.true, "Int8");
  });

  // ECMA262 24.2.4.8
  obj.defineNativeMethod("getInt16", 1, (context, [byteOffset, littleEndian]) => {
    // 1. Let v be the this value.
    let v = context;

    // 2. If littleEndian is not present, let littleEndian be false.
    if (!littleEndian) littleEndian = realm.intrinsics.false;

    // 3. Return ? GetViewValue(v, byteOffset, littleEndian, "Int16").
    return (0, _arraybuffer.GetViewValue)(realm, v, byteOffset, littleEndian, "Int16");
  });

  // ECMA262 24.2.4.9
  obj.defineNativeMethod("getInt32", 1, (context, [byteOffset, littleEndian]) => {
    // 1. Let v be the this value.
    let v = context;

    // 2. If littleEndian is not present, let littleEndian be false.
    if (!littleEndian) littleEndian = realm.intrinsics.false;

    // 3. Return ? GetViewValue(v, byteOffset, littleEndian, "Int32").
    return (0, _arraybuffer.GetViewValue)(realm, v, byteOffset, littleEndian, "Int32");
  });

  // ECMA262 24.2.4.10
  obj.defineNativeMethod("getUint8", 1, (context, [byteOffset]) => {
    // 1. Let v be the this value.
    let v = context;

    // 2. Return ? GetViewValue(v, byteOffset, true, "Uint8").
    return (0, _arraybuffer.GetViewValue)(realm, v, byteOffset, realm.intrinsics.true, "Uint8");
  });

  // ECMA262 24.2.4.11
  obj.defineNativeMethod("getUint16", 1, (context, [byteOffset, littleEndian]) => {
    // 1. Let v be the this value.
    let v = context;

    // 2. If littleEndian is not present, let littleEndian be false.
    if (!littleEndian) littleEndian = realm.intrinsics.false;

    // 3. Return ? GetViewValue(v, byteOffset, littleEndian, "Uint16").
    return (0, _arraybuffer.GetViewValue)(realm, v, byteOffset, littleEndian, "Uint16");
  });

  // ECMA262 24.2.4.12
  obj.defineNativeMethod("getUint32", 1, (context, [byteOffset, littleEndian]) => {
    // 1. Let v be the this value.
    let v = context;

    // 2. If littleEndian is not present, let littleEndian be false.
    if (!littleEndian) littleEndian = realm.intrinsics.false;

    // 3. Return ? GetViewValue(v, byteOffset, littleEndian, "Uint32").
    return (0, _arraybuffer.GetViewValue)(realm, v, byteOffset, littleEndian, "Uint32");
  });

  // ECMA262 24.2.4.13
  obj.defineNativeMethod("setFloat32", 2, (context, [byteOffset, value, littleEndian]) => {
    // 1. Let v be the this value.
    let v = context;

    // 2. If littleEndian is not present, let littleEndian be false.
    if (!littleEndian) littleEndian = realm.intrinsics.false;

    // 3. Return ? SetViewValue(v, byteOffset, littleEndian, "Float32", value).
    return (0, _arraybuffer.SetViewValue)(realm, v, byteOffset, littleEndian, "Float32", value);
  });

  // ECMA262 24.2.4.14
  obj.defineNativeMethod("setFloat64", 2, (context, [byteOffset, value, littleEndian]) => {
    // 1. Let v be the this value.
    let v = context;

    // 2. If littleEndian is not present, let littleEndian be false.
    if (!littleEndian) littleEndian = realm.intrinsics.false;

    // 3. Return ? SetViewValue(v, byteOffset, littleEndian, "Float64", value).
    return (0, _arraybuffer.SetViewValue)(realm, v, byteOffset, littleEndian, "Float64", value);
  });

  // ECMA262 24.2.4.15
  obj.defineNativeMethod("setInt8", 2, (context, [byteOffset, value]) => {
    // 1. Let v be the this value.
    let v = context;

    // 2. Return ? SetViewValue(v, byteOffset, true, "Int8", value).
    return (0, _arraybuffer.SetViewValue)(realm, v, byteOffset, realm.intrinsics.true, "Int8", value);
  });

  // ECMA262 24.2.4.16
  obj.defineNativeMethod("setInt16", 2, (context, [byteOffset, value, littleEndian]) => {
    // 1. Let v be the this value.
    let v = context;

    // 2. If littleEndian is not present, let littleEndian be false.
    if (!littleEndian) littleEndian = realm.intrinsics.false;

    // 3. Return ? SetViewValue(v, byteOffset, littleEndian, "Int16", value).
    return (0, _arraybuffer.SetViewValue)(realm, v, byteOffset, littleEndian, "Int16", value);
  });

  // ECMA262 24.2.4.17
  obj.defineNativeMethod("setInt32", 2, (context, [byteOffset, value, littleEndian]) => {
    // 1. Let v be the this value.
    let v = context;

    // 2. If littleEndian is not present, let littleEndian be false.
    if (!littleEndian) littleEndian = realm.intrinsics.false;

    // 3. Return ? SetViewValue(v, byteOffset, littleEndian, "Int32", value).
    return (0, _arraybuffer.SetViewValue)(realm, v, byteOffset, littleEndian, "Int32", value);
  });

  // ECMA262 24.2.4.18
  obj.defineNativeMethod("setUint8", 2, (context, [byteOffset, value]) => {
    // 1. Let v be the this value.
    let v = context;

    // 2. Return ? SetViewValue(v, byteOffset, true, "Uint8", value).
    return (0, _arraybuffer.SetViewValue)(realm, v, byteOffset, realm.intrinsics.true, "Uint8", value);
  });

  // ECMA262 24.2.4.19
  obj.defineNativeMethod("setUint16", 2, (context, [byteOffset, value, littleEndian]) => {
    // 1. Let v be the this value.
    let v = context;

    // 2. If littleEndian is not present, let littleEndian be false.
    if (!littleEndian) littleEndian = realm.intrinsics.false;

    // 3. Return ? SetViewValue(v, byteOffset, littleEndian, "Uint16", value).
    return (0, _arraybuffer.SetViewValue)(realm, v, byteOffset, littleEndian, "Uint16", value);
  });

  // ECMA262 24.2.4.20
  obj.defineNativeMethod("setUint32", 2, (context, [byteOffset, value, littleEndian]) => {
    // 1. Let v be the this value.
    let v = context;

    // 2. If littleEndian is not present, let littleEndian be false.
    if (!littleEndian) littleEndian = realm.intrinsics.false;

    // 3. Return ? SetViewValue(v, byteOffset, littleEndian, "Uint32", value).
    return (0, _arraybuffer.SetViewValue)(realm, v, byteOffset, littleEndian, "Uint32", value);
  });

  // ECMA26224.2.4.21
  obj.defineNativeProperty(realm.intrinsics.SymbolToStringTag, new _index.StringValue(realm, "DataView"), { writable: false });
};

var _index = require("../../values/index.js");

var _is = require("../../methods/is.js");

var _arraybuffer = require("../../methods/arraybuffer.js");

var _invariant = require("../../invariant.js");

var _invariant2 = _interopRequireDefault(_invariant);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
//# sourceMappingURL=DataViewPrototype.js.map